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<pre><span class="sourceLineNo">001</span>package org.nashua.tt151.libraries.parsers;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import org.nashua.tt151.util.BitwiseTools;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import org.nashua.tt151.util.StringTools;<a name="line.4"></a>
<span class="sourceLineNo">005</span><a name="line.5"></a>
<span class="sourceLineNo">006</span>/**<a name="line.6"></a>
<span class="sourceLineNo">007</span> * This class contains classes and enums for parsing messages transmitted from <a name="line.7"></a>
<span class="sourceLineNo">008</span> * the laptop/robot. Use the static class Parsing for parsing messages.<a name="line.8"></a>
<span class="sourceLineNo">009</span> * A message is a string containing the command, key, value and args.<a name="line.9"></a>
<span class="sourceLineNo">010</span> * For more information on the structure of the message view the wiki.<a name="line.10"></a>
<span class="sourceLineNo">011</span> * @author Brennan Ringey<a name="line.11"></a>
<span class="sourceLineNo">012</span> * @version 1.2<a name="line.12"></a>
<span class="sourceLineNo">013</span> */<a name="line.13"></a>
<span class="sourceLineNo">014</span>public class ProtocolParsing {<a name="line.14"></a>
<span class="sourceLineNo">015</span>    <a name="line.15"></a>
<span class="sourceLineNo">016</span>    private ProtocolParsing() {}<a name="line.16"></a>
<span class="sourceLineNo">017</span>    <a name="line.17"></a>
<span class="sourceLineNo">018</span>    /**<a name="line.18"></a>
<span class="sourceLineNo">019</span>     * A class representing a pseudo-enum for the avaiable commands<a name="line.19"></a>
<span class="sourceLineNo">020</span>     */<a name="line.20"></a>
<span class="sourceLineNo">021</span>    public static class Command {<a name="line.21"></a>
<span class="sourceLineNo">022</span>    <a name="line.22"></a>
<span class="sourceLineNo">023</span>        public char shorthand;<a name="line.23"></a>
<span class="sourceLineNo">024</span>        public byte bitsum;<a name="line.24"></a>
<span class="sourceLineNo">025</span>        <a name="line.25"></a>
<span class="sourceLineNo">026</span>        private Command(char c, byte b) {<a name="line.26"></a>
<span class="sourceLineNo">027</span>            this.shorthand = c;<a name="line.27"></a>
<span class="sourceLineNo">028</span>            this.bitsum = b;<a name="line.28"></a>
<span class="sourceLineNo">029</span>        }<a name="line.29"></a>
<span class="sourceLineNo">030</span>    <a name="line.30"></a>
<span class="sourceLineNo">031</span>        public static final Command Query = new Command('Q', (byte)1);<a name="line.31"></a>
<span class="sourceLineNo">032</span>        public static final Command Reply = new Command('R', (byte)2);<a name="line.32"></a>
<span class="sourceLineNo">033</span>        public static final Command Send = new Command('S', (byte)3);<a name="line.33"></a>
<span class="sourceLineNo">034</span>        public static final Command Unknown = new Command('U', (byte)0);<a name="line.34"></a>
<span class="sourceLineNo">035</span>        public static final Command[] ALL = { Query, Reply, Send, Unknown };<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>    }<a name="line.37"></a>
<span class="sourceLineNo">038</span>    <a name="line.38"></a>
<span class="sourceLineNo">039</span>    /**<a name="line.39"></a>
<span class="sourceLineNo">040</span>     * A class representing a pseudo-enum for the available keys<a name="line.40"></a>
<span class="sourceLineNo">041</span>     */<a name="line.41"></a>
<span class="sourceLineNo">042</span>    public static class Key {<a name="line.42"></a>
<span class="sourceLineNo">043</span>        <a name="line.43"></a>
<span class="sourceLineNo">044</span>        public String shorthand;<a name="line.44"></a>
<span class="sourceLineNo">045</span>        public byte bitsum;<a name="line.45"></a>
<span class="sourceLineNo">046</span>        <a name="line.46"></a>
<span class="sourceLineNo">047</span>        private Key(String c, byte l) { <a name="line.47"></a>
<span class="sourceLineNo">048</span>            this.shorthand = c; <a name="line.48"></a>
<span class="sourceLineNo">049</span>            this.bitsum = l;<a name="line.49"></a>
<span class="sourceLineNo">050</span>        }<a name="line.50"></a>
<span class="sourceLineNo">051</span>        <a name="line.51"></a>
<span class="sourceLineNo">052</span>        public static final Key CamAngle = new Key("CA", (byte)28);<a name="line.52"></a>
<span class="sourceLineNo">053</span>        public static final Key ShooterSpeed = new Key("SS", (byte)4);<a name="line.53"></a>
<span class="sourceLineNo">054</span>        public static final Key AnalogValue = new Key("AV", (byte)8);<a name="line.54"></a>
<span class="sourceLineNo">055</span>        public static final Key EncoderValue = new Key("EV", (byte)16);<a name="line.55"></a>
<span class="sourceLineNo">056</span>        public static final Key PWMValue = new Key("PV", (byte)12);<a name="line.56"></a>
<span class="sourceLineNo">057</span>        public static final Key RelayValue = new Key("RV", (byte)24);<a name="line.57"></a>
<span class="sourceLineNo">058</span>        public static final Key SolenoidValue = new Key("SV", (byte)20);<a name="line.58"></a>
<span class="sourceLineNo">059</span>        public static final Key Unknown = new Key("", (byte)0);<a name="line.59"></a>
<span class="sourceLineNo">060</span>        public static final Key[] ALL = { CamAngle, ShooterSpeed, AnalogValue, EncoderValue, PWMValue, RelayValue, SolenoidValue, Unknown };<a name="line.60"></a>
<span class="sourceLineNo">061</span>        <a name="line.61"></a>
<span class="sourceLineNo">062</span>    }<a name="line.62"></a>
<span class="sourceLineNo">063</span>    /*<a name="line.63"></a>
<span class="sourceLineNo">064</span>    public class MessageInvalidException extends Exception {<a name="line.64"></a>
<span class="sourceLineNo">065</span>        <a name="line.65"></a>
<span class="sourceLineNo">066</span>        private String msg;<a name="line.66"></a>
<span class="sourceLineNo">067</span>        private int type;<a name="line.67"></a>
<span class="sourceLineNo">068</span>        public static final int VALUE_INVALID = 0;<a name="line.68"></a>
<span class="sourceLineNo">069</span>        public static final int HEADER_INVALID = 1;<a name="line.69"></a>
<span class="sourceLineNo">070</span>        public static final int ARGS_INVALID = 2;<a name="line.70"></a>
<span class="sourceLineNo">071</span>        <a name="line.71"></a>
<span class="sourceLineNo">072</span>        public MessageInvalidException(int type, Throwable cause) {<a name="line.72"></a>
<span class="sourceLineNo">073</span>            super("The message failed to parse", cause);<a name="line.73"></a>
<span class="sourceLineNo">074</span>            this.type = type;<a name="line.74"></a>
<span class="sourceLineNo">075</span>        }<a name="line.75"></a>
<span class="sourceLineNo">076</span>        <a name="line.76"></a>
<span class="sourceLineNo">077</span>    }*/<a name="line.77"></a>
<span class="sourceLineNo">078</span>    <a name="line.78"></a>
<span class="sourceLineNo">079</span>    <a name="line.79"></a>
<span class="sourceLineNo">080</span>    /**<a name="line.80"></a>
<span class="sourceLineNo">081</span>    * This class is responsible for parsing messages sent from the laptop to the<a name="line.81"></a>
<span class="sourceLineNo">082</span>    * robot and vice versa. For more information on the protocol visit the wiki.<a name="line.82"></a>
<span class="sourceLineNo">083</span>    * @author Brennan Ringey<a name="line.83"></a>
<span class="sourceLineNo">084</span>    * @version 3.3<a name="line.84"></a>
<span class="sourceLineNo">085</span>    */<a name="line.85"></a>
<span class="sourceLineNo">086</span>    public static final class StringParser {<a name="line.86"></a>
<span class="sourceLineNo">087</span>        <a name="line.87"></a>
<span class="sourceLineNo">088</span>        //Prevent instantiation<a name="line.88"></a>
<span class="sourceLineNo">089</span>        private StringParser() { }<a name="line.89"></a>
<span class="sourceLineNo">090</span>        <a name="line.90"></a>
<span class="sourceLineNo">091</span>        /**<a name="line.91"></a>
<span class="sourceLineNo">092</span>        * Tests if the message is a Query (aka Request). A Query message<a name="line.92"></a>
<span class="sourceLineNo">093</span>        * begins with the character Q and is not case-sensitive.<a name="line.93"></a>
<span class="sourceLineNo">094</span>        * @param msg The message to test<a name="line.94"></a>
<span class="sourceLineNo">095</span>        * @return True if the message is a query, false otherwise<a name="line.95"></a>
<span class="sourceLineNo">096</span>        */<a name="line.96"></a>
<span class="sourceLineNo">097</span>       public static boolean isQuery(String msg) {<a name="line.97"></a>
<span class="sourceLineNo">098</span>           return (msg.charAt(0) == 'Q' || msg.charAt(0) == 'q');<a name="line.98"></a>
<span class="sourceLineNo">099</span>       }<a name="line.99"></a>
<span class="sourceLineNo">100</span><a name="line.100"></a>
<span class="sourceLineNo">101</span>       /**<a name="line.101"></a>
<span class="sourceLineNo">102</span>        * Test if the message is a Reply. A Reply message begins with the <a name="line.102"></a>
<span class="sourceLineNo">103</span>        * character R and is not case-sensitive.<a name="line.103"></a>
<span class="sourceLineNo">104</span>        * @param msg The message to test<a name="line.104"></a>
<span class="sourceLineNo">105</span>        * @return True if the message is a Reply, false otherwise<a name="line.105"></a>
<span class="sourceLineNo">106</span>        */<a name="line.106"></a>
<span class="sourceLineNo">107</span>       public static boolean isReply(String msg) {<a name="line.107"></a>
<span class="sourceLineNo">108</span>           return (msg.charAt(0) == 'R' || msg.charAt(0) == 'r');<a name="line.108"></a>
<span class="sourceLineNo">109</span>       }<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span>       /**<a name="line.111"></a>
<span class="sourceLineNo">112</span>        * Test if the message is a Send. A Send message begins with the<a name="line.112"></a>
<span class="sourceLineNo">113</span>        * character S and is not case-sensitive.<a name="line.113"></a>
<span class="sourceLineNo">114</span>        * @param msg The message to test<a name="line.114"></a>
<span class="sourceLineNo">115</span>        * @return True if the message is a Send, false otherwise<a name="line.115"></a>
<span class="sourceLineNo">116</span>        */<a name="line.116"></a>
<span class="sourceLineNo">117</span>       public static boolean isSend(String msg) {<a name="line.117"></a>
<span class="sourceLineNo">118</span>           return (msg.charAt(0) == 'S' || msg.charAt(0) == 's');<a name="line.118"></a>
<span class="sourceLineNo">119</span>       }<a name="line.119"></a>
<span class="sourceLineNo">120</span><a name="line.120"></a>
<span class="sourceLineNo">121</span>       /**<a name="line.121"></a>
<span class="sourceLineNo">122</span>        * An alternative to the above methods, this method gets the command from<a name="line.122"></a>
<span class="sourceLineNo">123</span>        * the message header rather than testing it.<a name="line.123"></a>
<span class="sourceLineNo">124</span>        * @param msg The message to get the command from<a name="line.124"></a>
<span class="sourceLineNo">125</span>        * @return An enumerator from Commands, unknown is returned if no other commands match<a name="line.125"></a>
<span class="sourceLineNo">126</span>        */<a name="line.126"></a>
<span class="sourceLineNo">127</span>       public static Command getCommand(String msg) {<a name="line.127"></a>
<span class="sourceLineNo">128</span>           char c = Character.toUpperCase(msg.charAt(0));<a name="line.128"></a>
<span class="sourceLineNo">129</span>           Command command = Command.Unknown;<a name="line.129"></a>
<span class="sourceLineNo">130</span><a name="line.130"></a>
<span class="sourceLineNo">131</span>           for (int i = 0; i != Command.ALL.length; i++) {<a name="line.131"></a>
<span class="sourceLineNo">132</span>               if (c == Command.ALL[i].shorthand) {<a name="line.132"></a>
<span class="sourceLineNo">133</span>                   command = Command.ALL[i];<a name="line.133"></a>
<span class="sourceLineNo">134</span>               }<a name="line.134"></a>
<span class="sourceLineNo">135</span>           }<a name="line.135"></a>
<span class="sourceLineNo">136</span>           <a name="line.136"></a>
<span class="sourceLineNo">137</span>           return command;<a name="line.137"></a>
<span class="sourceLineNo">138</span>       }<a name="line.138"></a>
<span class="sourceLineNo">139</span><a name="line.139"></a>
<span class="sourceLineNo">140</span>       /**<a name="line.140"></a>
<span class="sourceLineNo">141</span>        * Identifies the key in the message. All of the possible keys are located on<a name="line.141"></a>
<span class="sourceLineNo">142</span>        * the wiki and are represented by the enum Keys. If no possible key was<a name="line.142"></a>
<span class="sourceLineNo">143</span>        * identified, Unknown is returned<a name="line.143"></a>
<span class="sourceLineNo">144</span>        * @param msg The message containing the key to retrieve<a name="line.144"></a>
<span class="sourceLineNo">145</span>        * @return An enumerator from Keys representing the key in the message<a name="line.145"></a>
<span class="sourceLineNo">146</span>        */<a name="line.146"></a>
<span class="sourceLineNo">147</span>       public static Key getKey(String msg) {<a name="line.147"></a>
<span class="sourceLineNo">148</span>           String k = separateByColon(msg)[1];<a name="line.148"></a>
<span class="sourceLineNo">149</span>           Key key = Key.Unknown;<a name="line.149"></a>
<span class="sourceLineNo">150</span><a name="line.150"></a>
<span class="sourceLineNo">151</span>           for (int i = 0; i != Key.ALL.length; i++) {<a name="line.151"></a>
<span class="sourceLineNo">152</span>               if (k.equals(Key.ALL[i].shorthand)) {<a name="line.152"></a>
<span class="sourceLineNo">153</span>                   key = Key.ALL[i];<a name="line.153"></a>
<span class="sourceLineNo">154</span>               }<a name="line.154"></a>
<span class="sourceLineNo">155</span>           }<a name="line.155"></a>
<span class="sourceLineNo">156</span><a name="line.156"></a>
<span class="sourceLineNo">157</span>           return key;<a name="line.157"></a>
<span class="sourceLineNo">158</span>       }<a name="line.158"></a>
<span class="sourceLineNo">159</span><a name="line.159"></a>
<span class="sourceLineNo">160</span>       /**<a name="line.160"></a>
<span class="sourceLineNo">161</span>        * Gets the value from the message. The value varies based on the key. If a <a name="line.161"></a>
<span class="sourceLineNo">162</span>        * value was not identified, null is returned<a name="line.162"></a>
<span class="sourceLineNo">163</span>        * @param msg The message to get the value from<a name="line.163"></a>
<span class="sourceLineNo">164</span>        * @return A string containing the value.<a name="line.164"></a>
<span class="sourceLineNo">165</span>        */<a name="line.165"></a>
<span class="sourceLineNo">166</span>       public static String getValue(String msg) {<a name="line.166"></a>
<span class="sourceLineNo">167</span>           String[] a = separateByColon(msg);<a name="line.167"></a>
<span class="sourceLineNo">168</span>           try {<a name="line.168"></a>
<span class="sourceLineNo">169</span>               return a[2];<a name="line.169"></a>
<span class="sourceLineNo">170</span>           } catch (IndexOutOfBoundsException ex) {<a name="line.170"></a>
<span class="sourceLineNo">171</span>               return null;<a name="line.171"></a>
<span class="sourceLineNo">172</span>           }<a name="line.172"></a>
<span class="sourceLineNo">173</span>       }<a name="line.173"></a>
<span class="sourceLineNo">174</span><a name="line.174"></a>
<span class="sourceLineNo">175</span>       /**<a name="line.175"></a>
<span class="sourceLineNo">176</span>        * Gets the additional args (if any) from the message. Arguments are <a name="line.176"></a>
<span class="sourceLineNo">177</span>        * separated by commas, after the final colon<a name="line.177"></a>
<span class="sourceLineNo">178</span>        * @param msg The message containing args (if any)<a name="line.178"></a>
<span class="sourceLineNo">179</span>        * @return An array of strings, representing the arguments<a name="line.179"></a>
<span class="sourceLineNo">180</span>        */<a name="line.180"></a>
<span class="sourceLineNo">181</span>       public static String[] getArgs(String msg) {<a name="line.181"></a>
<span class="sourceLineNo">182</span>           String[] a = separateByColon(msg);<a name="line.182"></a>
<span class="sourceLineNo">183</span>           String[] args;<a name="line.183"></a>
<span class="sourceLineNo">184</span>           try {<a name="line.184"></a>
<span class="sourceLineNo">185</span>               args = StringTools.split(a[3], ',');<a name="line.185"></a>
<span class="sourceLineNo">186</span>           } catch (IndexOutOfBoundsException ex) {<a name="line.186"></a>
<span class="sourceLineNo">187</span>               args = null;<a name="line.187"></a>
<span class="sourceLineNo">188</span>           }<a name="line.188"></a>
<span class="sourceLineNo">189</span>           return args;<a name="line.189"></a>
<span class="sourceLineNo">190</span>       }<a name="line.190"></a>
<span class="sourceLineNo">191</span><a name="line.191"></a>
<span class="sourceLineNo">192</span>       /**<a name="line.192"></a>
<span class="sourceLineNo">193</span>        * Create a string to be transmitted over TCP. Query does not require a value<a name="line.193"></a>
<span class="sourceLineNo">194</span>        * or arguments (Leave value null). Arguments are NOT required.<a name="line.194"></a>
<span class="sourceLineNo">195</span>        * @param command A enumerator from Commands representing the command (Must not be Commands.Unknown)<a name="line.195"></a>
<span class="sourceLineNo">196</span>        * @param key An enumerator from Keys representing the key (Must not be Keys.Unknown!)<a name="line.196"></a>
<span class="sourceLineNo">197</span>        * @param value A string representing the value (Leave empty string if Query)<a name="line.197"></a>
<span class="sourceLineNo">198</span>        * @param args A string of args to be added<a name="line.198"></a>
<span class="sourceLineNo">199</span>        * @return A String containing the message to be sent<a name="line.199"></a>
<span class="sourceLineNo">200</span>        */<a name="line.200"></a>
<span class="sourceLineNo">201</span>       public static String createMessage(Command command, Key key, String value, String[] args) {<a name="line.201"></a>
<span class="sourceLineNo">202</span>           String packet = null;<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span>           if (command == null || key == null) { return null; }<a name="line.204"></a>
<span class="sourceLineNo">205</span><a name="line.205"></a>
<span class="sourceLineNo">206</span>           if (command != Command.Unknown &amp;&amp; key != Key.Unknown) {<a name="line.206"></a>
<span class="sourceLineNo">207</span>               packet = command.shorthand + ":" + key.shorthand + ":" + value;<a name="line.207"></a>
<span class="sourceLineNo">208</span>               if (args.length &gt; 0) {<a name="line.208"></a>
<span class="sourceLineNo">209</span>                   packet += ":";<a name="line.209"></a>
<span class="sourceLineNo">210</span>                   for (int i = 0; i != args.length; i++) {<a name="line.210"></a>
<span class="sourceLineNo">211</span>                       packet += args[i];<a name="line.211"></a>
<span class="sourceLineNo">212</span>                       if (i != args.length - 1) { packet += ","; }<a name="line.212"></a>
<span class="sourceLineNo">213</span>                   }<a name="line.213"></a>
<span class="sourceLineNo">214</span>               }<a name="line.214"></a>
<span class="sourceLineNo">215</span>           }<a name="line.215"></a>
<span class="sourceLineNo">216</span><a name="line.216"></a>
<span class="sourceLineNo">217</span>           return packet;<a name="line.217"></a>
<span class="sourceLineNo">218</span>       }<a name="line.218"></a>
<span class="sourceLineNo">219</span>       <a name="line.219"></a>
<span class="sourceLineNo">220</span>       //public static String toFastFormat(Message msg) {<a name="line.220"></a>
<span class="sourceLineNo">221</span>           <a name="line.221"></a>
<span class="sourceLineNo">222</span>       //}<a name="line.222"></a>
<span class="sourceLineNo">223</span><a name="line.223"></a>
<span class="sourceLineNo">224</span>       //Helper method used by parsing methods<a name="line.224"></a>
<span class="sourceLineNo">225</span>       private static String[] separateByColon(String msg) {<a name="line.225"></a>
<span class="sourceLineNo">226</span>           return StringTools.split(msg, ':');<a name="line.226"></a>
<span class="sourceLineNo">227</span>       } <a name="line.227"></a>
<span class="sourceLineNo">228</span>       <a name="line.228"></a>
<span class="sourceLineNo">229</span>       <a name="line.229"></a>
<span class="sourceLineNo">230</span>    }<a name="line.230"></a>
<span class="sourceLineNo">231</span>    <a name="line.231"></a>
<span class="sourceLineNo">232</span>    /**<a name="line.232"></a>
<span class="sourceLineNo">233</span>     * This class parses FastFormat messages transmitted to and from robot/laptop.<a name="line.233"></a>
<span class="sourceLineNo">234</span>     * The FastFormat uses 1 byte for the header and the rest being a value/args.<a name="line.234"></a>
<span class="sourceLineNo">235</span>     * For more information on FastFormat go to http://goo.gl/S8fwa<a name="line.235"></a>
<span class="sourceLineNo">236</span>     * @author Brennan Ringey<a name="line.236"></a>
<span class="sourceLineNo">237</span>     * @version 0.1 (Indev - unstable)<a name="line.237"></a>
<span class="sourceLineNo">238</span>     */<a name="line.238"></a>
<span class="sourceLineNo">239</span>    public static class FastParser {<a name="line.239"></a>
<span class="sourceLineNo">240</span>        <a name="line.240"></a>
<span class="sourceLineNo">241</span>        private FastParser() {}<a name="line.241"></a>
<span class="sourceLineNo">242</span>        <a name="line.242"></a>
<span class="sourceLineNo">243</span>        private static char INT_ID = 'I';<a name="line.243"></a>
<span class="sourceLineNo">244</span>        private static char BYTE_ID = 'B';<a name="line.244"></a>
<span class="sourceLineNo">245</span>        private static char DOUBLE_ID = 'D';<a name="line.245"></a>
<span class="sourceLineNo">246</span>        private static char ARG_ID = ':';<a name="line.246"></a>
<span class="sourceLineNo">247</span>        <a name="line.247"></a>
<span class="sourceLineNo">248</span>        public static Command getCommand(String msg) {<a name="line.248"></a>
<span class="sourceLineNo">249</span>            Command command = Command.Unknown;<a name="line.249"></a>
<span class="sourceLineNo">250</span>            byte header = (byte)msg.charAt(0);<a name="line.250"></a>
<span class="sourceLineNo">251</span>            //Set all bits after the first two to zero<a name="line.251"></a>
<span class="sourceLineNo">252</span>            byte cheader = BitwiseTools.removebits(header, (byte)2, (byte)7);<a name="line.252"></a>
<span class="sourceLineNo">253</span>            <a name="line.253"></a>
<span class="sourceLineNo">254</span>            //Iterate through all commands<a name="line.254"></a>
<span class="sourceLineNo">255</span>            for (int i = 0; i != Command.ALL.length; i++) {<a name="line.255"></a>
<span class="sourceLineNo">256</span>                Command c = Command.ALL[i];<a name="line.256"></a>
<span class="sourceLineNo">257</span>                <a name="line.257"></a>
<span class="sourceLineNo">258</span>                //don't ask, it works<a name="line.258"></a>
<span class="sourceLineNo">259</span>                if (((cheader &amp; c.bitsum) == c.bitsum) &amp;&amp; ((cheader ^ c.bitsum) == cheader-c.bitsum)) {<a name="line.259"></a>
<span class="sourceLineNo">260</span>                    command = c;<a name="line.260"></a>
<span class="sourceLineNo">261</span>                    break;<a name="line.261"></a>
<span class="sourceLineNo">262</span>                }<a name="line.262"></a>
<span class="sourceLineNo">263</span>            }<a name="line.263"></a>
<span class="sourceLineNo">264</span>            <a name="line.264"></a>
<span class="sourceLineNo">265</span>            return command;<a name="line.265"></a>
<span class="sourceLineNo">266</span>        }<a name="line.266"></a>
<span class="sourceLineNo">267</span>        <a name="line.267"></a>
<span class="sourceLineNo">268</span>        public static Key getKey(String msg) {<a name="line.268"></a>
<span class="sourceLineNo">269</span>            Key key = Key.Unknown;<a name="line.269"></a>
<span class="sourceLineNo">270</span>            byte header = (byte)msg.charAt(0);<a name="line.270"></a>
<span class="sourceLineNo">271</span>            byte kheader = BitwiseTools.removebits(header, (byte)0, (byte)1);<a name="line.271"></a>
<span class="sourceLineNo">272</span>            kheader = BitwiseTools.removebits(header, (byte)5, (byte)7);<a name="line.272"></a>
<span class="sourceLineNo">273</span>            <a name="line.273"></a>
<span class="sourceLineNo">274</span>            for (int i = 0; i != Key.ALL.length; i++) {<a name="line.274"></a>
<span class="sourceLineNo">275</span>                Key k = Key.ALL[i];<a name="line.275"></a>
<span class="sourceLineNo">276</span>                if (((kheader &amp; k.bitsum) == k.bitsum) &amp;&amp; ((kheader ^ k.bitsum) == kheader-k.bitsum)) {<a name="line.276"></a>
<span class="sourceLineNo">277</span>                    key = k;<a name="line.277"></a>
<span class="sourceLineNo">278</span>                    break;<a name="line.278"></a>
<span class="sourceLineNo">279</span>                }<a name="line.279"></a>
<span class="sourceLineNo">280</span>            }<a name="line.280"></a>
<span class="sourceLineNo">281</span>            return key;<a name="line.281"></a>
<span class="sourceLineNo">282</span>        }<a name="line.282"></a>
<span class="sourceLineNo">283</span>        <a name="line.283"></a>
<span class="sourceLineNo">284</span>        public static String getValue(String msg) {<a name="line.284"></a>
<span class="sourceLineNo">285</span>            String value = null;<a name="line.285"></a>
<span class="sourceLineNo">286</span>            <a name="line.286"></a>
<span class="sourceLineNo">287</span>            String body = msg.substring(1);<a name="line.287"></a>
<span class="sourceLineNo">288</span>            char identifier = body.charAt(0);<a name="line.288"></a>
<span class="sourceLineNo">289</span>            <a name="line.289"></a>
<span class="sourceLineNo">290</span>            if (identifier == BYTE_ID) {<a name="line.290"></a>
<span class="sourceLineNo">291</span>                byte val = 0;<a name="line.291"></a>
<span class="sourceLineNo">292</span>                <a name="line.292"></a>
<span class="sourceLineNo">293</span>                try {<a name="line.293"></a>
<span class="sourceLineNo">294</span>                    val = (byte)body.charAt(val);<a name="line.294"></a>
<span class="sourceLineNo">295</span>                    value = String.valueOf((int)val);<a name="line.295"></a>
<span class="sourceLineNo">296</span>                } catch (IndexOutOfBoundsException ex) {<a name="line.296"></a>
<span class="sourceLineNo">297</span>                    System.out.println(ex.toString());<a name="line.297"></a>
<span class="sourceLineNo">298</span>                }<a name="line.298"></a>
<span class="sourceLineNo">299</span>            }<a name="line.299"></a>
<span class="sourceLineNo">300</span>            <a name="line.300"></a>
<span class="sourceLineNo">301</span>            if (identifier == INT_ID) {<a name="line.301"></a>
<span class="sourceLineNo">302</span>                <a name="line.302"></a>
<span class="sourceLineNo">303</span>            }<a name="line.303"></a>
<span class="sourceLineNo">304</span>            <a name="line.304"></a>
<span class="sourceLineNo">305</span>            <a name="line.305"></a>
<span class="sourceLineNo">306</span>            return value;<a name="line.306"></a>
<span class="sourceLineNo">307</span>        }<a name="line.307"></a>
<span class="sourceLineNo">308</span>        <a name="line.308"></a>
<span class="sourceLineNo">309</span>        public static String createMessage(Command command, Key key, String value, String[] args) {<a name="line.309"></a>
<span class="sourceLineNo">310</span>            String msg = "";<a name="line.310"></a>
<span class="sourceLineNo">311</span>            <a name="line.311"></a>
<span class="sourceLineNo">312</span>            short header = 0;<a name="line.312"></a>
<span class="sourceLineNo">313</span>            header += command.bitsum;<a name="line.313"></a>
<span class="sourceLineNo">314</span>            header += key.bitsum;<a name="line.314"></a>
<span class="sourceLineNo">315</span>            msg = "" + (char)header;<a name="line.315"></a>
<span class="sourceLineNo">316</span>            <a name="line.316"></a>
<span class="sourceLineNo">317</span>            return msg;<a name="line.317"></a>
<span class="sourceLineNo">318</span>        }<a name="line.318"></a>
<span class="sourceLineNo">319</span>    }<a name="line.319"></a>
<span class="sourceLineNo">320</span>       <a name="line.320"></a>
<span class="sourceLineNo">321</span>    <a name="line.321"></a>
<span class="sourceLineNo">322</span>    <a name="line.322"></a>
<span class="sourceLineNo">323</span>}<a name="line.323"></a>




























































</pre>
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